PDF malware analysis — malicious · 04dfdd430cfb7e72

MALICIOUS

PDF

29.0 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap

MD5: ae9b506e110c6995be68490752e56ec0 SHA-1: d7157a260add490c0493e1d025d96f48b7a9a092 SHA-256: 04dfdd430cfb7e722cca927cf8ec9f87bf57a28a97e62577a3b9a904cd4ab97b

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF document contains high-severity heuristics indicating the presence of executable JavaScript and an embedded script payload. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically an exploit targeting PDF viewers. The embedded files, particularly 'embedded_file_obj0010.bin' and 'embedded_file_obj0014.bin', are likely components of the exploit or the dropped payload, supporting the classification as a malicious PDF exploit.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 8

XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT

PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
ClamAV: Pdf.Exploit.Dropped-81 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-81
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xci/1.0/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://ns.adobe.com/xtd/
- http://www.xfa.org/schema/xfa-data/1.0/
- http://ns.adobe.com/xfdf/
- http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 8

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `04462f810d6eacdacecc9d0a5f3f81bebc722af4415e04da19b520338f642b51`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xD7	67 bytes
`embedded_file_obj0009.bin` `38c81935ce11af5f7ac843faedee50e3f72f9fb62219a5761db7ba2d82e88742`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x162	65 bytes
`embedded_file_obj0010.bin` `0c731745dece541851895b880d045401950d97b1566366ff1ead9878db3c02f8`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x1EE	802 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`embedded_file_obj0011.bin` `a185e95495a2db847c9c17c8172a24174b9f608ef474fa541c5f530bbc672bce`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x55B	26606 bytes
`embedded_file_obj0012.bin` `103d1e7983cf88bfacedddb4af33ffb5317d9c2c8b3e1bfd987b2c5d712bc985`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x6D94	323 bytes
`embedded_file_obj0014.bin` `f87eb6de05cca8bc3ae4439301ffeb174f2ccce13082198ed2509bd8b4519ed8`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x6F21	164 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`embedded_file_obj0015.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0x700B	77 bytes
`embedded_file_obj0016.bin` `78b09463af5cd373870eae2e3e83de87b7f6b659e0d0117ab4c09d90ebb2ad95`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x709F	68 bytes

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